

Ah, that one’s tougher. Most of the time the sender isn’t paying for return service. For most advertising like that, anyway.
You can look at the postage on the top right… If it says “Personalized Mail” then it won’t be returned unless it says that it will underneath. “Postage Paid” or “Letter Mail,” or that extra note under “Personalized Mail” that says it will be returned (I forget the exact wording, but it’s obvious when it’s there), you can just draw a line through the name and address and leave it for the letter carrier or put it in a red box.
It’s still up to the sender to stop wasting their money, though.

I would like to hear your TCP/IP joke. Please send your TCP/IP joke.